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Bell in Vacuum

Bell in Vacuum

Product Code : JA-SW-7592

The Bell in Vacuum (SKU JA-SW-7592) is a versatile unit for demonstrating the properties of a vacuum, best known for showing that sound cannot travel without air. It comprises a sturdy baseplate with a tap, a glass bell jar and a detachable battery-operated bell, and it is used with a hand vacuum pump or, ideally, an electric vacuum pump. JaincoLab supplies this bell in vacuum apparatus to school and college physics laboratories.

Specifications

The Bell in Vacuum set consists of a sturdy baseplate fitted with a tap, a glass bell jar that sits on the baseplate and a detachable battery-operated bell, and it is designed to be evacuated with a hand vacuum pump or, preferably, an electric vacuum pump.

ProductBell in Vacuum
SKUJA-SW-7592
BaseplateSturdy baseplate with tap
JarGlass bell jar
BellDetachable, battery operated
PumpHand vacuum pump or, ideally, electric vacuum pump (not part of this listing)
PurposeDemonstrating the properties of a vacuum

Demonstrations with the bell in vacuum apparatus

With the bell ringing inside the glass jar, air is pumped out and the sound heard by the class fades as the pressure falls, then returns when air is let back in; because the bell is detachable, the jar and baseplate are also free for other demonstrations of the properties of a vacuum.

  • Showing that sound needs a medium and cannot cross a vacuum
  • Letting air back in to show the sound of the bell returning
  • Other vacuum demonstrations with the bell removed from the jar
  • Secondary school sound lessons and college physics demonstrations

Scope of supply and ordering

The listing comprises the sturdy baseplate with tap, the glass bell jar and the detachable battery-operated bell. The vacuum pump is a separate item; a hand pump or an electric vacuum pump can be quoted with the set. Accessories, spares, batteries and quantities are confirmed on the quotation.

MOQ, lead time and packing are confirmed on each quotation according to the quantity and the delivery destination. JaincoLab supplies single sets for school laboratories, several sets for colleges and bulk education orders, and exports to buyers in Africa, the Middle East and South and South-East Asia.

Frequently asked questions

What does the Bell in Vacuum set include?
A sturdy baseplate with a tap, a glass bell jar and a detachable battery-operated bell.

Which pump should be used with it?
It can be used with a hand vacuum pump, or ideally with an electric vacuum pump.

Is the bell removable?
Yes. The battery-operated bell is detachable, so the jar and baseplate can also be used for other vacuum demonstrations.

Related products

Browse Sound and Waves for more sound apparatus, or see the full range of JaincoLab, a physics lab equipment manufacturer in India.

Request a quote

To order the Bell in Vacuum, send the number of sets, the pump required and the delivery destination through the JaincoLab contact page or email [email protected]. For tender or project supply, see our tenders page.

Last updated: September 2026

   
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Office Address

Jain Scientific Suppliers
2475-84, Hargolal Road,
Ambala Cantt, Haryana, India

[email protected]

+91-85699-09696

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